5072821 has 8 divisors (see below), whose sum is σ = 5553464. Its totient is φ = 4605120.

The previous prime is 5072813. The next prime is 5072831. The reversal of 5072821 is 1282705.

It can be written as a sum of positive squares in 4 ways, for example, as 972196 + 4100625 = 986^2 + 2025^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5072821 - 2³ = 5072813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5072801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2406 + ... + 3991.

It is an arithmetic number, because the mean of its divisors is an integer number (694183).

Almost surely, 2^5072821 is an apocalyptic number.

It is an amenable number.

5072821 is a deficient number, since it is larger than the sum of its proper divisors (480643).

5072821 is a wasteful number, since it uses less digits than its factorization.

5072821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6471.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 5072821 is about 2252.2923877685. The cubic root of 5072821 is about 171.8237445401.

The spelling of 5072821 in words is "five million, seventy-two thousand, eight hundred twenty-one".